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on the gas valve along with a neutral and earth

on the gas valve

stem, the gas valve has what is called a modulec regulator, see pics this acts as the boiler control stat. as temp increases full burner pressure 10mb is reduced instead of turning off gas valve, down to as low as 2mb. this device also controls pump overrun, hence the red wire. this is why all...

i think your video proves my point. the servowarm elite 50 boiler you have taken out must be at least 30 years old, i wonder if your baxi platinum will last that long? :cool:

the servowarm elite 30/50 boilers were the first to use a modulating gas valve, ie gas pressure to gas valve was reduced instead of a stat turning it off. well ahead of it's time. boilers were made by a company called Malvern boilers. early days of central heating systems in the 1970's servowarm...

yes I have them to sell, but if you fit your horstman timer then you will no longer be able to close the front drop down cover. this boiler is obsolete, but I have every part you would ever need to keep it working for the next 20 years. the kit I pictured is part of what servowarm called a...

pics show elite 30 and 50 timeswitch conversion kit. simple it's a kit. I've shown it with danfoss programmer, as it was all I had to hand at the time but it is prewired for a danfoss ts715 timer, the kit as everything needed and was made by servowarm.

if your going to do a job do it right. this is what you need